/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MovieRenderTileImage.h
Given a rendered tile, accumulate the data to the full size image.
void AccumulatePixelData ( const [FImagePixelData](API\Runtime\ImageWriteQueue\FImagePixelData) & InPixelData, int32 InTileX, int32 InTileY, FVector2D InSubpixelOffset )